BLOCIS: Blockchain-Based Cyber Threat Intelligence Sharing Framework for Sybil-Resistance

摘要: The convergence of fifth-generation (5G) communication and the Internet-of-Things (IoT) has dramatically increased diversity complexity network. This change diversifies attacker’s attack vectors, increasing impact damage cyber threats. Cyber threat intelligence (CTI) technology is a proof-based security system which responds to these advanced threats proactively by analyzing sharing security-related data. However, performance CTI systems can be significantly compromised creating disseminating improper policies if an attacker intentionally injects malicious data into system. In this paper, we propose blockchain-based framework that improves confidence in source content quickly detect eliminate inaccurate for resistance Sybil attack. proposed collects procedure validated through smart contracts stores information about metainformation blockchain ensures validity reliability ensuring traceability proposes model efficiently operate manage compliance with de facto standard. We present simulation results prove effectiveness Sybil-resistance terms cost attackers.